Acoustic source

Details Acoustic source Acoustic source

1975-03-10

1976-09-07

Hunt, Brooks H.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

340 8R, 340 12R, 340 17R, G01V 104, G01V 138, H04B 1302

Patent

active

039789403

ABSTRACT:
A broadband low frequency source suitable for deep sea applications without pressure compensation is disclosed. The source utilizes hydraulically powered flexural disc radiators which are sized to small fractions of the generated wavelength. Inertance is applied hydraulically to the radiators to effectively mass load the radiators, thus lowering the resonant frequency of the radiators to fall within the transmission band to minimize driving power requirements and provide for operation over a wide bandwidth.

REFERENCES:
patent: 2390847 (1945-12-01), Olson
patent: 3219970 (1965-11-01), Sims
patent: 3392369 (1968-07-01), Dickie et al.
Villchur, "Audio Engineering" Aug. 1952, p. 20.
Wallen et al., APPRES: A Very-Low Frequency Acoustic . . . . S1307-0050 Digest of Technical Papers of 1970 . . . Sept. 1970.

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